Chapter 3. Connecting the AVR ONE!

Connecting to a JTAG target

The AVR ONE! probe has two target connectors that support JTAG debugging and programming. When debugging a target device with AUX trace, the 38-pin Nexus (Mictor) connector should be used. For JTAG debugging without AUX trace, or programming, either the Mictor or the 10-pin connector can be used.

Using the JTAG Mictor connector

The pinout for the Mictor 38-pin connector is shown in Figure 4.4, “Mictor Connector Pinout”

Simply insert the AVR ONE! probe connector into the target application's Mictor connector and apply pressure until a connection is secured. The socket is polarised to prevent incorrect mating orientation.

Using the JTAG 10-pin connector

The pinout for the 10-pin JTAG connector is shown in Figure 4.2, “JTAG header pinout”

Be sure to use the correct orientation of the 10-pin header when connecting the AVR ONE! to the target application PCB. The stand-off adapters (provided) can be used to connect the AVR ONE! probe to both 100-mil and 50-mil target application connectors.